port extenders, #BoldportClub style LEAP#340

Sep 10, 2017 builds p16-ixpando

Contributed by @tardate on Sep 10, 2017

My IxpandO build. I decided to start with the default setup of 8 inputs (switches) and 8 outputs (LEDs), and an Arduino sketch to demonstrate digital output and interrupt-driven input with the Wire library. All notes, schematics and code are in the LEAP repo on GitHub. Here’s a quick demo:

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